Stability of Jack‐Type Aircraft Power Controls: An Analysis of the Characteristics of Hydraulic Jacks With Particular Reference to Inherent Damping and Non‐Linearities in the Valve Flow Equation
R.K. Thomasson
(Formerly with English Electric Aviation Ltd., Warton, Lancashire, a member of the British Aircraft Corporation.)
Abstract
THE simplest type of aircraft power control is probably that shown in FIG. 1. The dynamics of this type of servo have been discussed in papers by Harpur and others, and it is shown that if the valve has cither zero or positive overlap the servo will be unstable with inertia loading. Harpur suggested the following methods of stabilizing the servo:
Citation
Thomasson, R.K. (1962), "Stability of Jack‐Type Aircraft Power Controls: An Analysis of the Characteristics of Hydraulic Jacks With Particular Reference to Inherent Damping and Non‐Linearities in the Valve Flow Equation", Aircraft Engineering and Aerospace Technology, Vol. 34 No. 7, pp. 198-204. https://doi.org/10.1108/eb033577
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:MCB UP Ltd
Copyright © 1962, MCB UP Limited
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